MDM Observatory 2.4m Telescope Observer's Report for 2004 Sep 19

Observer(s): Gezari
Institution(s): Columbia

Instrument: MkIII

No Observing (see comments below)
Bad weather most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity all night.

Observing Summary:

Liquid Nitrogen tank was empty after filling dewar at 4:30pm.
I had no Nitrogen to fill dewar in the morning, so this must
be done when the Nitrogen tank is refilled Monday morning.

The instrument window had to be purged with dry nitrogen to
remove ice that had collected there, because it was creating 
a dip in the flat-lamp spectrum.

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Submitted on 2004 Sep 20 [7:44:12]